package com.hmall.common.interceptors;


import cn.hutool.core.util.StrUtil;
import com.hmall.common.utils.UserContext;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UserInfoInterceptor implements HandlerInterceptor {
  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    // 1.获取登录用户信息
    String userInfo = request.getHeader("user-info");
    // 2.判断是否获取了用户，如果有，存入ThreadLocal
    if(StrUtil.isNotBlank(userInfo)) {
      UserContext.setUser(Long.valueOf(userInfo));
    }
    // 3.放行
    return true;
  }

  @Override
  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    // 清理用户
    UserContext.removeUser();
  }
}
